The social and environmental effects of large dams, Volume 2

From inside the book

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Page 66seepage every year — approximately 10 percent of the water available for
irrigation.12 Over the entire irrigation system, losses due to conveyance,
seepage, and extravagance in water utilization equal 17 percent of the water
delivered.

Page 82According to one study, the building of the Aswan Low Dam caused the
schistosomiasis rate among the population in some areas of Egypt to rise from 21 percent to 75 percent. Once the Aswan High Dam had been completed, the
comparable ...

Page 13915 Overall, 23 percent of the country's land suffers to varying degrees from
salinization or waterlogging, but that figure reaches 80 percent in the Punjab. In
the lower Indus, concentrations of salt in the groundwater have been found to
reach ...